Application areas
Under voltage
When the rotor frequency feedback line is poorly connected or faulty, the device's protection function becomes unstable.
Rotor feedback and current feedback lost.
Encoder failure
Arcing or sparking occurs when the stator or rotor contactor switches.
The command relay has malfunctioned.
Rotor feedback lost
Current imbalance fault
The forward and reverse contactors are working normally, but the motor is not receiving power.
The output signal of a certain current transformer (CT) is incorrect or faulty, causing the speed control system to shut down.
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